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AAVSO International Database

Special Notice #67: Special Notice #66 on V455 AND Corrected

September 12, 2007: Due to a typographical error, the lead sentence of AAVSO Special Notice #66 was garbled. My sincere apologies! Here is the correct version:

According to IAU Circular No. 8868 (Daniel E. W. Green, editor), N. N. Samus, Institute of Astronomy, Moscow, reports that the dwarf nova cataclysmic variable 2328+38 HS 2331+3905 has been assigned the official name V455 And. The AAVSO validation file has been changed to reflect this new name. Please use V455 AND when reporting observations.

Special Notice #66: HS 2331+3905 Named V455 And

September 12, 2007: According to IAU Circular 8868 (Daniel E. W. Green, editor), N. N. Samus, Institute of Astronomy, Moscow, reports that the dwarf nova cataclysmic variable 2328+38 HS 2331+3905 is now V455 And, and HS 2331+3905 has been assigned the official name V455 And. The AAVSO validation file has been changed to reflect this new name. Please use V455 AND when reporting observations.

V455 AND is located at RA 23:34:01.55, Dec +39:21:42.9 (J2000)

Special Notice #60: Upcoming primary eclipse of ASAS182612

August 20, 2007: As described in Alert Notice 351, we are running an extended campaign on the newly discovered eclipsing Cepheid ASAS 182611+1212.6. Doug Welch has reminded me that the primary eclipse is predicted to be around August 28 around 0130UT. However, the eclipses are many days long, and the binary light curve is continuously changing, so don't just observe on the 28th.

Special Notice #58: SN 2007gr in NGC 1058

August 16, 2007: As published in CBET 1034 by D. Madison and W. Li, Supernova 2007gr was discovered at magnitude 13.8 by KAIT on August 15.53 UT, and is currently at magnitude 13.5 on August 16.47. It is located in the bright spiral galaxy NGC 1058, approximately 30 arcseconds northwest of the nucleus.

The coordinates of the supernova are (J2000):

RA: 02:43:27.98     Dec: +37:20:44.7

Special Notice #59: Update on SN 2007gr

August 19, 2007: Data for SN 2007gr can now be submitted to the AAVSO using the following Harvard Designation and/or name: 0237+36B SN 2007GR

Latest report from Martin Nicholson is that the SN is at V=12.83 and continuing to rise. The two prior SNe in NGC 1058 both reached a peak brightness about this level, so SN 2007gr may not get much brighter.

Special Notice #61: N Vul 07 is now V458 Vul

August 22, 2007: CBET 1038 reports that the GCVS team has given the nova the formal name of V458 Vul. Please use 1950+20 V458 Vul for all future submissions through WebObs.

Special Notice #56: N Vul 07 [V458 Vul]

August 9, 2007: N Vul 07 (CBET 1027, AAVSO Special Notice #55) is most likely a nova [V458 Vul]; high-resolution spectra are being analyzed to confirm the object's nature. An AAVSO Alert Notice will be issued later, but the purpose of this special notice is to inform observers that:

  - N Vul 07 (19:54:24.64 +20:52:51.9 (2000.0)) has been added to the AAVSO files as 1950+20 N VUL 07.

Special Notice #83: X-ray Transient/Nova = V598 Pup; Possible Nova in Ser [V535 Ser]

November 20, 2007

1. X-ray Transient/Nova = V598 Pup

Further to AAVSO Special Notices #81 and #82, Nikolai Samus, Institute of Astronomy, Russian Academy of Sciences, announced (IAU Circular No. 8898, D. W. E. Green, ed.) that the bright x-ray transient and apparent nova has been assigned the name V598 Puppis [07:05:42.7 -38:14:42 (equinox 2000.0)].

Special Notice #82: Update on possible X-ray transient/Nova [V598 Pup]

November 19, 2007: Further to AAVSO Special Notice #81, precise coordinates for the optical counterpart of the new X-ray source XMMSL1 J070542.7-381442 [V598 Pup] (Read et al., ATEL 1282) have been determined. The (J2000) coordinates are

RA 07:05:42.51 (+/- 0.05 arcsec) , Dec -38:14:39.3 (+/- 0.08 arcsec)

Coordinates were determined by A. Henden using V-band images supplied by S. Dvorak.

This object has now been entered into the AAVSO Variable Star Index (VSX) as: VSX J070542.5-381439

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